// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
 * Ceph - scalable distributed file system
 *
 * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
 *
 * This is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License version 2.1, as published by the Free Software 
 * Foundation.  See file COPYING.
 * 
 */

#include <sys/stat.h>
#include <iostream>
#include <string>

#include "common/config.h"

#include "common/async/context_pool.h"
#include "client/SyntheticClient.h"
#include "client/Client.h"

#include "msg/Messenger.h"

#include "mon/MonClient.h"

#include "common/Timer.h"
#include "global/global_init.h"
#include "common/ceph_argparse.h"
#include "common/pick_address.h"

#include <sys/types.h>
#include <fcntl.h>

extern int syn_filer_flags;

int main(int argc, const char **argv, char *envp[])
{
    //cerr << "ceph-syn starting" << std::endl;
    vector<const char *> args;
    argv_to_vec(argc, argv, args);

    auto cct = global_init(NULL, args, CEPH_ENTITY_TYPE_CLIENT,
                           CODE_ENVIRONMENT_UTILITY, 0);
    common_init_finish(g_ceph_context);

    parse_syn_options(args); // for SyntheticClient

    pick_addresses(g_ceph_context, CEPH_PICK_ADDRESS_PUBLIC);

    // get monmap
    ceph::async::io_context_pool poolctx(1);
    MonClient mc(g_ceph_context, poolctx);
    if (mc.build_initial_monmap() < 0)
        return -1;

    list<Client *> clients;
    list<SyntheticClient *> synclients;
    vector<Messenger *> messengers{static_cast<unsigned>(num_client), nullptr};
    vector<MonClient *> mclients{static_cast<unsigned>(num_client), nullptr};

    cout << "ceph-syn: starting " << num_client << " syn client(s)" << std::endl;
    for (int i = 0; i < num_client; i++)
    {
        messengers[i] = Messenger::create_client_messenger(g_ceph_context, "synclient");
        mclients[i] = new MonClient(g_ceph_context, poolctx);
        mclients[i]->build_initial_monmap();
        auto client = new StandaloneClient(messengers[i], mclients[i], poolctx);
        client->set_filer_flags(syn_filer_flags);
        SyntheticClient *syn = new SyntheticClient(client);
        clients.push_back(client);
        synclients.push_back(syn);
        messengers[i]->start();
    }

    for (list<SyntheticClient *>::iterator p = synclients.begin();
         p != synclients.end();
         ++p)
        (*p)->start_thread();

    poolctx.stop();

    //cout << "waiting for client(s) to finish" << std::endl;
    while (!clients.empty())
    {
        Client *client = clients.front();
        SyntheticClient *syn = synclients.front();
        clients.pop_front();
        synclients.pop_front();
        syn->join_thread();
        delete syn;
        delete client;
    }

    for (int i = 0; i < num_client; ++i)
    {
        // wait for messenger to finish
        delete mclients[i];
        messengers[i]->shutdown();
        messengers[i]->wait();
        delete messengers[i];
    }
    return 0;
}
